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| INSTALLATION | ||||
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TOC | TOC | CONNECT OUTPUT COMPONENTS | GUN LINER & CONTACT TIP |
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| INSTALLATION |
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Section | Master |
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INSTALL THE WORK CLAMP | The Magnum 250 SP gun and cable provided with the | |||||
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to | to | Attach the work clamp to the cable which extends from | ||||
the front of the machine using the following procedure: | .045” (0.9 or 1.2mm) diameter electrode and an .035 | |||||
Return | Return | |||||
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| (0.9mm) contact tip. |
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| 1. Insert the lug on the end of the work cable through | 1. If a .045” diameter wire size is to be used, install | |||
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| the strain relief hole in the work clamp handle. See | |||
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| Figure A.7. | the .045” contact tip (also provided). |
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| 2. Slide the work cable through the hole up to the bolt | 2. For other wire sizes, use the following procedure | |||
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| and nut. | for contact tip and gas nozzle installation. See | ||
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| Figure A.8. |
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3. Fasten work cable using the bolt and nut provided.
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| a. | Choose the correct size contact tip for the | |
TOC | TOC |
| electrode being used (wire size is stenciled on | |
| the side of the contact tip) and screw it snugly | |||
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Section | Master |
| into the gas diffuser. | |
b. | Be sure the nozzle insulator is fully screwed | |||
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to | to |
| onto the gun tube and does not block the gas | |
| holes in the diffuser. | |||
Return | Return |
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c. | Slip the appropriate gas nozzle onto the noz- | |||
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| zle insulator. Either a standard .50" (12.7mm) | |
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| or optional .62” (15.9mm) I.D. slip on gas noz- | |
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| zle may be used and should be selected | |
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| based on the welding application. |
FIGURE A.7 - Installing The Work Clamp
d. Adjust the gas nozzle for the GMAW process to be used.
TOC | TOC | OUTPUT POLARITY CONNECTION | For the | the contact | |||||||||||
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Section | Master |
| WARNING |
| tip end should be flush to extended to .12" (3.2mm) | ||||||||||
WARNING: TURN THE WELDER POWER SWITCH | For the spray transfer process, the contact tip should | ||||||||||||||
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| be flush to recessed .12" (3.2mm). |
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to | to | OFF BEFORE CHANGING OUTPUT CONNECTION. |
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Return | Return |
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The welder is shipped from the factory connected for |
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| electrode positive (+) polarity. This is the normal polar- |
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| ity for GMA welding. |
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| If negative |
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| nection of the two cables located in the wire drive com- |
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| partment near the front panel. The negative lead is the |
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| lead closest to the front panel (where the leads come |
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TOC | TOC | out of the floor of the compartment) and should be |
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reconnected to the brass conductor tube of the gun |
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Sectionto | Masterto | connector. The positive lead is stamped (+) on its ter- |
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minal and should be reconnected to the work lead ter- |
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| minal. |
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Return | Return |
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| FIGURE A.8 - Contact Tip and | Electrode | |||||||||
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| Connections |
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| IDEALARC |
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